hi 

skype business

Error for video and Audio Call (A/V) ===>>>

The call could not connect due to network issues. try logging out of skype business and loggin back in, or try again

hi

Client Skype Busieness

Connect WIFI with Mobile Or Labtop OR call video and Audio (A/V) receive error:

The call could not connect due to network issues. try logging out of skype business and loggin back in, or try again

Hi,

Thanks for your post.

Since the problem is related to Lync, I suggest you could post in the Lync forum.

https://social.technet.microsoft.com/Forums/lync/en-US/home?category=lync

In addition, here is the similar thread disscussed before, you may have a check.

Among the problem, it is more related to NICs problem.  If NICs have problems to autonegotiate. Or default settings on the NIC doesn't fit to switch capabilities. For devices, there maybe only firmware upgrades or changing the devices.

https://social.technet.microsoft.com/Forums/lync/en-US/90201671-8f73-450b-b768-848b707b41ae/lync-2010-av-calls-suddenly-fail-call-failed-due-to-network-issues?forum=ocsclients

https://social.technet.microsoft.com/forums/lync/en-US/500a6140-f753-45de-a9de-45afab0e5537/call-failed-due-to-network-issuelync-2010

Best Regards,

Mary Dong